AWR Application Notes

Design of a BAW Quadplexer Module Using AWR Software Cadence is a pivotal leader in electronic design and computational expertise, using its Intelligent System Design strategy to turn design concepts into reality. Cadence customers are the world's most creative and innovative companies, delivering extraordinary electronic products from chips to boards to systems for the most dynamic market applications. www.cadence.com © 2020 Cadence Design Systems, Inc. All rights reserved worldwide. Cadence, the Cadence logo, and the other Cadence marks found at www.cadence.com/go/trademarks are trademarks or registered trademarks of Cadence Design Systems, Inc. All other trademarks are the property of their respective owners. 14720 06/20 SA/RA/AN-M-BAW/PDF Conclusion This application example has described the design of a quadplexer with high isolation losses between output ports as realized by circuit simulation and optimization with AWR Microwave Office ® software. The device slightly under performed compared to simulation results. However, there are several contributing factors, including that the quality of the machinery system was low for producing high-quality RF circuits and that the soldering process in manufacturing is challenging. While the reflection parameters are not good enough for both business and academic applications, if the diplexer is well designed, the insertion loss of the quadplexer should not be affected compared to insertion losses of the BAW duplexers, individually. Because CA technology is used generally in mobile devices, a quadplexer or multiplexer design must be as small as possible. Another improvement point for a better quadplexer would be to use a high Q resonator rather than a stepped-impedance resonator, which would be useful in terms of selectivity and shrinking dimensions. References 1. L. Miller, "Understanding Carrier Aggregation (CA) Technology," Carrier Aggregation Fundamentals, New Jersey, John Wiley & Sons, Inc., 2016, pp. 6 - 12. 2. S. Mahon ve R. Aigner, "Bulk Acoustic Wave Devices – Why, How, and Where They are Going," CS MANTECH Conference, 2007. 3. T. Yang, P.-l. Chi ve T. Itoh, "High Isolation and Compact Diplexer," IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, cilt 20, no. 10, pp. 551-555, 2010. 4. R. Brinda ve P. Parveen, "Design of RF Diplexer for Mobile Communication," International Journal of Computer Applications, cilt 85, no. 4, pp. 16-21, 2014. 5. C. Quendo, E. Rius ve C. Person, "Narrow Bandpass Filter Using Dual-Behavior Resonators," IEEE Trans. Microw. Theory Tech., cilt 51, no. 3, pp. 734-743, 2003. 6. TriQuint Semiconductor Inc, "TQQ1003 Band 3 BAW Duplexer," Qorvo Inc, 2015. 7. TriQuint Semiconductor Inc, "TQQ1007 Band 7 BAW Duplexer," Qorvo Inc, 2015. Acknowledgment Special thanks to Emrecan Gidik, Istanbul Technical University, for his BSc thesis, "Carrier Aggregation BAW Quadplexer Module," which inspired the creation of this application note.

• Cover